Problema Solution
Twice the square of number minus 3 is 47 . Find the number.
Answer provided by our tutors
let x be the number
2*x^2 - 3 = 47
by solving we find 2 roots
x1 = 5
x2 = -5
click here to see the step by step solution of the quadratic equation
there are 2 solutions: 5 and -5.